Vencru - Invoice maker, inventory, and accounting app for small business owners Vencru is an invoice maker and inventory tracker for small business owners, contractors, and freelancers needing a simple and professional mobile invoice and accounting app. Replace your petty cashbook or invoice book with Vencru and start sending invoices, tracking expenses, managing your inventory/stock, and reviewing automatic business accounting reports. Vencru Main Features • Send professional invoices to